“鱼刺型”钻孔改性黏土帷幕注浆工艺试验研究
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摘要
在深埋矿体和井巷工程内等特殊条件下施工帷幕注浆工程所面临的技术难题一直是限制该行业技术发展的重要因素之一。依托云南某水患矿山,在井巷内成功实施了"鱼刺型"钻孔改性黏土浆帷幕注浆试验工程,其主要特点是:深埋矿体巷道内施工环境下,采用大钻孔孔距以及改性黏土注浆材料,在高注浆压力条件下实现构造导水地质环境下渗流含水层注浆,钻探方面所实施的"鱼刺型"分支孔曲率半径均小于5 m,分支角度大于30°,方位角偏差小于±10°。经研究验证该试验工程地层注浆量大大提高,达到设计注浆量1.5倍,堵水效果达到行业内要求。该项目在注浆材料和钻探工艺方面的研究成果不仅为该矿山水患治理提供了技术支撑,同时也为国内类似条件矿山帷幕注浆工程提供了借鉴。
The technical difficulties faced by the curtain grouting project under special conditions of deep buried ore body and underground engineering have always been one of the important factors that restrict the development of the industry.Relying on a water mine in Yunnan,the modified clay slurry curtain grouting project with"fishbone type"drilling has been successfully implemented in the well lane. Its main characteristics are: under the construction environment of roadway for deep buried ore body,the large borehole distance and modified clay grouting material are used to realize the seepage water aquifer grouting under the condition of tectonic water guide geological environment and under high grouting pressure. The radius of the branch hole ratio of the "fishbone" branch hole is less than 5 m and the branch angle is greater than 30° with azimuth angle deviation less than 10 degrees. It is verified that the grouting volume in the test works is greatly improved,where the grouting volume is 1.5 times as much as that of the designed,and its water plugging effect meets the requirement of the industry The research results of this project in grouting materials and drilling technology not only provide technical support for flood control in the mine,but also provide a reference for similar curtain grouting projects in China.
The technical difficulties faced by the curtain grouting project under special conditions of deep buried ore body and underground engineering have always been one of the important factors that restrict the development of the industry.Relying on a water mine in Yunnan,the modified clay slurry curtain grouting project with"fishbone type"drilling has been successfully implemented in the well lane. Its main characteristics are: under the construction environment of roadway for deep buried ore body,the large borehole distance and modified clay grouting material are used to realize the seepage water aquifer grouting under the condition of tectonic water guide geological environment and under high grouting pressure. The radius of the branch hole ratio of the "fishbone" branch hole is less than 5 m and the branch angle is greater than 30° with azimuth angle deviation less than 10 degrees. It is verified that the grouting volume in the test works is greatly improved,where the grouting volume is 1.5 times as much as that of the designed,and its water plugging effect meets the requirement of the industry The research results of this project in grouting materials and drilling technology not only provide technical support for flood control in the mine,but also provide a reference for similar curtain grouting projects in China.
引文
[1]刘新社,韩贵雷,于同超,等.矿山帷幕注浆规范[M].北京:中国地质出版社,2015.Liu Xinshe,Han Guilei,Yu Tongchao.Specification of Mine Curtain Grouting[M].Beijing:China Geological Publishing House,2015.
[2]宋峰,刘新社.中关铁矿帷幕注浆工程科技成果汇编[M].武汉:中国地质大学出版社,2012.Son Feng,Liu Xinshe.Compilation of Scientific and Technological Achievements of Curtain Grouting Engineering in Zhongguan Iron Mine[M].Wuhan:China University of Geosciences Press,2012.
[3]韩贵雷.城门山铜矿改性湖泥注浆工艺及堵水效果评价研究[J].工程勘察,2017,45(11):13-17.Han Guilei.Grouting process and water plugging effect evaluation research of modified lake mud at Chengmengshan Copper Mine[J].Geotechnical Investigation&Surveying Geotech Invest Survey,2017,45(11):13-17.
[4]韩贵雷,于同超,刘殿凤,等.深孔注浆帷幕墙井间电阻率测试技术和效果评价[J].地质调查与研究,2009,32(1):69-74.Han Guilei,Yu Tongchao,Liu Dianfeng.Effect evaluation and crosswell resistivity technology for deep-hole curtain grouting[J].Geological Survey and Research Geol Survey Res,2009,32(1):69-74.
[5]韩贵雷,于同超,刘殿凤,等.矿山帷幕注浆方案研究及堵水效果综合分析[J].矿业研究与开发,2010(3):95-98.Han Guilei,Yu Tongchao Liu Dianfeng.Comprehensive Analysis and Program Study on Water Plugging Effect for Curtain Grouting in Zhongguan Iron Mine[J].Mining Research and Development,2010(3):95-98.
[6]孙钊.大坝基岩灌浆[M].北京:中国水利水电出版社2004.Sun Zhao.Dam Bedrock Grouting[M].Beijing:China Water Conservancy and Hydropower Press,2004.
[7]韩贵雷.承压条件下破裂岩体注浆加固力学特性试验研究[J].矿业研究与开发,2012(5):70-74.Han Guilei.Study on Mechanical properties of broken rock grouting at pressure conditions[J].Mining Research and Development,2012(5):70-74.
[8]韩贵雷.裂隙岩体注浆后结构面粗糙度及刚度变化分析[J].金属矿山,2012(4):43-46.Han Guilei.Roughness and stiffness analysis on groutingstructural surface of fractured rock[J].Metal Mine,2012(4):43-46.
[9]Fan G,Yan F,Yue P.A hybrid fuzzy evaluation method for curtain grouting efficiency assessment based on an AHP method extended by D numbers[J].Expert Systems with Applications An International Journal,2016,44(S):289-303.
[10]H Shima.2-D and 3-D resistivity image recons-truction using crosshole data[J].Geophysics,1992,55(10):1270.
[2]宋峰,刘新社.中关铁矿帷幕注浆工程科技成果汇编[M].武汉:中国地质大学出版社,2012.Son Feng,Liu Xinshe.Compilation of Scientific and Technological Achievements of Curtain Grouting Engineering in Zhongguan Iron Mine[M].Wuhan:China University of Geosciences Press,2012.
[3]韩贵雷.城门山铜矿改性湖泥注浆工艺及堵水效果评价研究[J].工程勘察,2017,45(11):13-17.Han Guilei.Grouting process and water plugging effect evaluation research of modified lake mud at Chengmengshan Copper Mine[J].Geotechnical Investigation&Surveying Geotech Invest Survey,2017,45(11):13-17.
[4]韩贵雷,于同超,刘殿凤,等.深孔注浆帷幕墙井间电阻率测试技术和效果评价[J].地质调查与研究,2009,32(1):69-74.Han Guilei,Yu Tongchao,Liu Dianfeng.Effect evaluation and crosswell resistivity technology for deep-hole curtain grouting[J].Geological Survey and Research Geol Survey Res,2009,32(1):69-74.
[5]韩贵雷,于同超,刘殿凤,等.矿山帷幕注浆方案研究及堵水效果综合分析[J].矿业研究与开发,2010(3):95-98.Han Guilei,Yu Tongchao Liu Dianfeng.Comprehensive Analysis and Program Study on Water Plugging Effect for Curtain Grouting in Zhongguan Iron Mine[J].Mining Research and Development,2010(3):95-98.
[6]孙钊.大坝基岩灌浆[M].北京:中国水利水电出版社2004.Sun Zhao.Dam Bedrock Grouting[M].Beijing:China Water Conservancy and Hydropower Press,2004.
[7]韩贵雷.承压条件下破裂岩体注浆加固力学特性试验研究[J].矿业研究与开发,2012(5):70-74.Han Guilei.Study on Mechanical properties of broken rock grouting at pressure conditions[J].Mining Research and Development,2012(5):70-74.
[8]韩贵雷.裂隙岩体注浆后结构面粗糙度及刚度变化分析[J].金属矿山,2012(4):43-46.Han Guilei.Roughness and stiffness analysis on groutingstructural surface of fractured rock[J].Metal Mine,2012(4):43-46.
[9]Fan G,Yan F,Yue P.A hybrid fuzzy evaluation method for curtain grouting efficiency assessment based on an AHP method extended by D numbers[J].Expert Systems with Applications An International Journal,2016,44(S):289-303.
[10]H Shima.2-D and 3-D resistivity image recons-truction using crosshole data[J].Geophysics,1992,55(10):1270.